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(11) | EP 1 686 249 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Fluid swirling device |
| (57) The device includes a pair of flat planar vanes securely mounted within a cylindrical
housing. The vanes have a medial slit extending from the center to a longitudinal
end of the vane. The vanes are interconnected at the slits so that they are in criss-cross positioning. The vanes are axially angled so that when positioned in an intake air duct the vanes impart a swirling motion to the air entering the engine providing more complete mixing of the air and fuel and when positioned in an exhaust passageway the vanes impart a swirling motion to the exhaust gases exiting the engine providing scavenging of the exhaust gases. |